Molding machine



April 24, 1928. x

|-:. G. GEiRMER ET AL MOLDING MACHINE Filed Oct. 30, 1925 Patented Apr. 24; 1928.

nnwnnn:e. GERMER, EARL G. WALBRIDGE, AND .aoHiv nj yfsom, or ERIE/{PENN- 's nvalvm sarnWALBRInGnANDwYsocKI A's'sreNoas T SAID GERMER.

MOLDING MACHINE. Q

- 1 Application filedDctob'er so, 1925. seriajrivo. 65,755}

This invention- "is designed to improve molding machines permitting the making of machines capable of handling comparatively large molds wlth ordinary flask and pattern plates. In carrying out the invention we provide a lifting device for the mold flask which is pivotally secured to the flask, preferably the cope, whereby theflask may be lifted so as to reverse it and the cope lifted after the removal of the patterns The invention also con-templates the swinging of the lifted mold so that" a mold niay'bere paired wihen necessary. Features and details of theinvention will appear from the v i the operator steps on the foot lever, grasps the hand lever 28 and throws the whole Weight ofj the body on the twoi'levers, this ordinarily being 7 sufficient to raise even a specification and claims;

' The invention is illustrated inthe accompanyin-g'dra'wings as follows:.

Fig. 1 shows a frontelevat-ion of the machine. V

Fig, Fig.

blocks and flask pins.

' 1 marks the frame of the machine. This 2 an end view of the machine.

has axles 2 and the wheels '3. 'Apressurc cylinder l. is arranged at the center of the frame and a p l'atfori'nfi is mounted on the pi-iessureiii'iec'hanism. The flaskd-ragfi, mold plate 7 and cope 8 are shown onthe platform and a pressure board 9 is shown above the flask. A sq-ueezer head arranged above the pressure'board. Asqueez1ng valve 11 controls-thepressure cylinder 4 and a con trolling .valve 12 controls an I air line 13, connected with the vibrator 14 attached to V the mold plate. -Up'rights 15 are pivotally mounted on pins 16 extending from the frame and'the squeezing head is adjustably secured on the uprights by means of pins 17 the pins extending through openings 17 in the uprights. Springs 18 extend from clips 19 on theuprlghtsto p ns 20 on the front side'of'the platform These springs yieldingly hold the uprights 15 in their forward position; the uprights engaging stops 22 in their forward posia tion. This swinging mounting ofthe uprights permits the swinging of the squeezing head to a rearward position shown in dash lines in Fig. 2. So far the construction follows the common mold machine.

Uprights 21 are pivotally mounted on the pins 16 and engage the stops 22 intheir rights are'sw'ung to their forward position and the cope lowered into position on the.

forwardposition. These uprights have the lifting blocks 23 which are'slidingly mounted 3 an enlarged view of the lift ng I V These'lifting pins 34 have sockets 36 at their inner ends,- these sockets being adapted to dra .on the uprights 21. The, blocks 23am cone nectedrby ll-11 1x524 with rock-arms 25. 'fThe rock arms25are mounted on a rock shaft 26 which extends across the frontor the 2 machine so that the sliding blocks 23 are maintained in parallel relation; A foot lever .27 1s fixed on'the rock shaft 26 and a hand lever 28 also fixed on the shaft-'26. The;

hand lever operates adjacent to a notched :segment 29whichis adapted to be engaged by a pawl; 30, arranged in a guide 31 on the handle 28. -A' link 32 extends from the pawl to a. trip Jhandle"33 .mounted on thelever-28. In lifting the blocks, therefore,

large size mo'ld.

Pins 34 extend through the il iftirig blocks 1 23 and are secured thereon 'hyfi-pins 35;

receive trunnions37 carried bybr'ackets 38 g sired to swing them. p In the operation of the device, the mold is placed ontheplatforminverted, that is to.

say, withthe dragupwardly; San-d is-filled into the drag on top-ofth'e .mold plate. .The

drag and'cope are secured together by the strap 39. The flask is lifted bynieans of the lifting device described and turned over so as to place the drag on the bottom and, lowered so as to put the mold on the plat form. The cope is then filled and the niold squeezed in the usual manner. platform recedes from the; squeezing action the head 10;is swung to the rear position shown in dash lines in Fig. 2 and the straps 39"are released and the cope raised, the

jolting and vibrating being utilized in the usual=manner. :The parts are locked with the cope in its -lifted position by'the pawl -30. After the cope is lifted the uprights? are swungrearwardly and this permitsthe.

cope to be swung up so thatthe mold can be" repaired or Worked asnecessary. The pattern is removed from the drag'and this mold canberepaired as necessary. The up- After the V drag so as to complete or close the mold. Ihe mold is then removed from the platform.

In order to reduce the lifting power necessary to lift the flask we prefer to put springs around. the shaft 26, the springs being tensioned to exert lifting pressure on the rock arms.

IVhat we claim as new is:

1. In a molding machine, the combination of a molding machine platform; a flask lifter adapted to lift flasks from the platform comprising means pivotally engaging a flask; and a swinging mounting for said lifter.

2. In a molding machine, the combination of a molding machine platform; uprights at the sides of the platform; sliding blocks on the uprights; flask connections on the blocks; and lifting mechanism actuating the blocks.

3. In a molding machine, the combination of a molding machine platform; uprights at .the sides of the platform; sliding blocks on the uprights; flask connections on the blocks and lifting mechanism actuating the blocks comprising a foot lever. V

l. In a molding machine, the combination of a molding machine platform; uprights at the sides of the platform; sliding blocks on the uprights; flask connections onthe blocks; and lifting mechanism actuating the blocks comprising ahand lever.

5. In a molding machine, the combination of a molding machine platform; uprights at the sides of the platform; sliding blocks on the uprights; flask connections on the blocks; and lifting mechanism actuating the blocks comprising a hand lever. and a foot lever.

6. In a molding machine, the combination of a molding machine platform; uprights at the sides of the platform; sliding blocks on the uprights; flask connections on, the

blocks; and lifting mechanism actuating the blocks comprising a lever. and means for locking the blocks when elevated.

' 7 In a molding machine, the combination of a molding machine platform; uprights at the sides of the platform; slidingblocks v on the uprights; flask connections on the blocks; lifting mechanism actuating the blocks; and means exerting yielding pressure on the blocks. e

9. In a molding machine, the combination of a molding machine platform; a flask lifter adapted to lift flasks from the platform comprising means pivotally engaging a flask and means exertinglyielding lifting pressure on the flask lifter. I

10. In a'molding machine, the combination of a molding machine platform; a flask on the platform having trunnions thereon; a flask lifter comprising sockets engaging the flask lifter.

11. In a molding machine, the combination of a platform; a pressure device operating on the platform; a squeezing head opposing the pressure device; a swinginganounting for the squeezing head; a flask mounted on the platform having trunnions; a flask lifter operating on the trunnions; and a swinging mounting for the lifting device. a

In testimony whereof we have hereunto set our hands.

EDWARD aeERMnR. EARL c. WALBRIDGE. JOHN M. WYsooKI.

70 trunnions; and a swinging mounting for the 

